MDT does not have enough information to say how long any of these restrictions will be in place. Please use alternate routing when applicable. Please visit https://www.511mt.net/ for more information on incidents and closures.
S-482 Farm To Market Rd Libby, MT MP 2.0 to 3.0
Effective 3/17/2026. Road Closed due to flooding.
NW Montana Flooding
Effective 12/11/2025. A state of emergency was declared by Governor Greg Gianforte around noon on Thursday, December 11, for Lincoln County due to heavy rains and extensive flooding in the Libby and Troy areas. See information at NW Montana Flooding - Libby, Montana.
Updated road closures and bridge information.
Hwy 91 Big Hole River Bridge 22 Miles N of Dillon
Effective 10/22/2024. Full closure of the Big Hole River Bridge that carries Hwy 91 approximately 22 miles north of Dillon.
Latitude: 45.526644 and Longitude: - 112.701969
The bridge can no longer carry traffic safely or reliably and will remain closed until further notice.
US-2 Bridge over Kootenai River
Effective 03/07/2024. No overweight loads, loads over legal weight, including permitted loads, are prohibited until further notice from using the US-2 Bridge over Kootenai River at milepost 11.6. The Bridge is approximately 2 miles northwest of Troy, MT.
Permanent Restrictions
- Travel on US-12E from MP 2.4 to MP 33.3 through Deep Creek Canyon is limited to 12 feet wide, 130 feet long, 15 feet high.
- Travel on MT-35 is restricted between Polson and Bigfork for all loads exceeding 9 feet wide with the exception of loads that have an origin or destination between those locations. Please refer to MDT’s website or 511 for further information.
- US-87: between Belt and Raynesford (EB and WB): there is a width restriction of 12 feet 6 inches wide. The detours for EB and WB are: 1) WB: Raynesford, MT (WB detoured) to Great Falls, MT: U-87, S-427, US-89, US-87. 2) EB: Great Falls, MT (EB detoured) to Raynesford, MT: US-87, US-89, S-427, US-87.
